It's not too often that we see a piece of audio equipment that looks like part of a wall. But then again, when the price tag is around $50,000, all bets are off.

The system you see pictured here, which may resemble the partial construction of a well-appointed den or library, is actually a set of "MMthree Reference Speakers" from Evolution Acoustics--a gargantuan setup that boasts three-way loudspeakers and a 1,000-watt amplifier. A list of specs helps explain the unwieldy size: It begins with "dual 15-inch treated paper woofers, two 7-inch ceramic midranges and a 5-inch aluminum ribbon tweeter per side," according to Audio Junkies.

If you're interested in purchasing one of these monstrosities, don't count on free shipping: It weighs in at 525 pounds.